PCI Latency timer

[BTRY B 529th FA BN]

How many devices are under the control of the PCI Latency timer in the bios? Does it refer to the actual PCI slots on the board or are there other things governed by it?

 

[imagoon]

With the amount of detailed you provided, we couldn't even begin to tell you. Depending on what you are talking about you may need to get the engineering notes on what ever device you are talking about.

 

[mindless1]

Everything on the PCI bus, which on modern boards is only the PCI slots but on older boards could be an audio chip, network adapter, RAID controller, etc.

Someone could probably provide more product specific info if you had a particular motherboard in mind when asking but it's not likely either of the rigs in your sig have anything except PCI slots on the PCI bus.

 

[BTRY B 529th FA BN]

Are there any apps that could tell me what is on my PCI bus?

I brought this question up because I checked HWinfo64 and there were things on the bus that either I mis-understood or couldn't comprehend.

 

[mindless1]

It looks to me like HWInfo either wasn't updated to handle or can't differentiate between anything on any bus other than PCI so it just lumps everything under "PCI".

Don't know about apps, but just a visual inspection should tell you if there's any legacy chips spec'd as PCI interface which there shouldn't be on a X58 board unless it's a pretty rare chip functionality that was never ported over to a PCIe design.

 

[BTRY B 529th FA BN]

I do have one SATA card in a PCI slot and it's a hot swappable type. It never is in constant use. When I power up my drives it's active but I only do that infrequently to back up things then they go offline/powered off.

 

[mindless1]

I wouldn't worry about the latency timer with only one PCI device on the bus but you could fiddle with the bios setting and do benchmarks to see what works out best... but it's doubtful it'll make enough difference to bother with for a sequential backup scenario.